Underworld's shadowy prog house was a perfect foil for the coolest names of '90s alternative. The UK duo reverse light to dark and vice versa; they let the sun shine on moody trip-hoppers Massive Attack and film director David Lynch, taking each for a chugging, ecstatic ride around the rave. Underworld vocalist Karl Hyde adds smoky intrigue to Brian Eno's ambient spools on "Mother of a Dog".